• A Study on Occupancy and Compressive Strength of Concrete ...

     · Concrete is a composite construction material made primarily of aggregate, cement, and water. Fresh concrete must have certain features. These are shown in durability, workability, compressive strength, flexural strength, shrinkage, impact resistance, wear, and so forth. In this study, compressive strength, erosion, and attrition behavior of concrete with silica fume additive produced by ...

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  • EN 934-2 : 2009 + A1 2012 ADMIXTURES FOR CONCRETE, …

     · pren 13914-2 - design, preparation and application of external rendering and internal plastering - part 2: internal plastering: din en 16622:2016-02 : silica-calcium fume for concrete - definitions, requirements and conformity criteria: din en 934-6 e : 2006

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  • DIN EN 13263-1

     · Silica fume for concrete - Part 1: Definition, specifications and conformity criteria; German version prEN 13263-1:2005/prA1:2008 A description is not available for this item. DIN EN 13263-1

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  • A few amazing silicon materials, what are their uses ...

     · Silica Fume. Silica fume, also known as microsilica, is an amorphous (non-crystalline) polymorph of silicon dioxide, silica is an ultrafine powder collected as a by-product during silicon and ferrosilicon alloy production. According to the bulk density, we can divide our products into densified silica fume and undensified silica fume.

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  • Evaluation of different laboratory methods for testing ...

     · Four types of concrete manufactured with Portland cement (PC) and PC blended with silica fume, fly ash and blast furnace slag, were used in the inter-laboratory test. Based on the pre-evaluation results and taking other factors into account, four methods, that is, NT BUILD 443, NT BUILD 492, a steady-state migration test based on the ...

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  • UTILIZATION OF PULVERIZED FUEL ASH AS A CEMENT …

    Read in conjunction with: EN 450 Fly Ash and BS 3892. Part 1: Testing Program. UKQAA, Analysis of results, March 2000. PrEn 12620. Aggregates for concrete including those for use in roads and pavements. Draft EN, 1996. PrEN 13263. Silica fumes for concrete – Definitions, requirements and quality control, Draft EN, 1998.

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  • Oregon DOT Workshop – Portland, OR

    • Silica Fume (SF) Durability Tests – Design. Objective Potential Testing Specifications Information Obtained Determine design chloride ... Cr Mo N PREN* Stainless steel-clad carbon steel AASHTO M329 Cladding S31600 or S31603 16 2 22.6 XM-28 S24100 16.5 0.2 19.7 2.4 4 XM-29 S24000 17 0.2 20.2

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  • Conceptual Fire Design and assessment

    prEN (L2) EN (upper limit) EN (lower limit) Range for national definitions. Dissemination of information for training –Brussels, 20-21 October 2011 22 EUROCODE 2 Background and Applications Thermal Elongation ... higher content of silica fume than 6% by weight of

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  • Fire resistance assessment of concrete structures

    prEN (L1) prEN (L2) EN (upper limit) EN (lower limit) Range for national definitions. Workshop ''Structural Fire Design of Buildings according to the Eurocodes'' – Brussels, 2728 November 2012- 23 Thermal Elongation . ... higher content of silica fume than 6% by weight of

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  • BRE Digest 330: Alkali-silica reaction in concrete – the ...

    of metakaolin, silica fume and lithium salts with other minor editorial revisions. T he first guidance documents on ways of minimising the risk of damage due to alkali-silica reaction in con-crete were published in the early 1980s by the Concrete Society (Technical Report 30)(4) and BRE Digest 330.

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  • زاتمم بآ هدنهاک و هدننک ناور قوف رپوس

    - Silica Fume - Retarder سيئاوً تضَطه يٌف سحاٍ ات ًافطل طوصلا قَف زاَه ٍ ظَىسيٍطپَس ةيوطت ظا ُزافتسا ظا لثل.ذيئىشب åىباص و بآ اب تسىپ اب سات ترىص رد:ٳ٩٥ٴا ٲاٮ ٳ٩ٵب شٵپ

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  • ggde.gr

    EN 13263-2:2005 '''' Silica fume for concrete - Part 2: Conformity evaluation -- Πυριτική αιθάλη κατάλληλη για το σκυρόδεµα. Μέρος 2: Αξιολόγηση συµµόρφωσης". ... - prEN 14889-1 '''' Fibres for concrete - Part 1: Steel fibres - Definition, specifications and conformity ...

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  • DIN EN 13263-2

    Silica fume for concrete - Part 2: Conformity evaluation; German version EN 13263-2:2005+A1:2009. standard by DIN-adopted European Standard, 07/01/2009. View all product details.

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  • Betong – Användning av EN 206-1 i Sverige

    prEN 13263-1 Silica fume for concrete – Part 1: Definitions, requirements and conformity criteria3 SS 13 21 25 Betongprovning – Ballast – Korndensitet (hydrostatisk metod) och vattenabsorption SS 13 42 02 Cement – Sammansättning och fordringar för cement med be-gränsad värmeutveckling (BV-cement)

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  • Safety Data Sheet acc. to OSHA HCS

    Page 4/10 Safety Data Sheet acc. to OSHA HCS (Contd. of page 3) 50.1.3 69012-64-2Silica-Amorphous Silica fume 3,000 mg/m³ 1309-48-4magnesium oxide 730 mg/m³

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  • MICROSILICA– CHARACTERIZATION OF AN UNIQUE ADDITIVE

    Microsilica, or silica fume (CAS-no. 69012-64-2), is an amorphous type of silica dust mostly collected in ... prEN 13263-1), the silica content of silica fume for the use in concrete must be at least 85 %. Typical impurities are carbon, silicon, phosphorus, sulfur, silicon carbide, chloride, and a variety of metal oxides. The specific surface ...

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  • Sika Concrete Handbook by Sika AG

    11. Standards k-value concept for silica fume conforming to EN 13263 The maximum amount of silica fume to be taken into account for the w/c-ratio and the cement content shall meet the requirement ...

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  • Silica fume

     · Silica fume, also known as microsilica, (CAS number 69012-64-2, EINECS number 273-761-1) is an amorphous (non-crystalline) polymorph of silicon dioxide, silica is an ultrafine powder collected as a by-product of the silicon and ferrosilicon alloy production and consists of spherical particles with an average particle diameter of 150 nm.

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  • What is Silica Fume

    Silica fume is a co-product from the production of silicon or ferrosilicon metal. Silica fume is a mineral admixture, a very fine powder of spherical particles that average 0.1 to 0.3 microns in diameter with a surface area of 17 to 30 m2/g. Silica fume is used in a variety of cementitious concrete, grouts and mortars, refractory, elastomer and ...

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  • Silica Fume

    Silica fume is an amorphous, highly reactive pozzolan. As shown in Table 3.1, silica fume has a high content of silicon dioxide, and the X-ray diffraction analysis of silica fume shows a broad hump located at the peak of cristobalite (ACI-Committee-234, 2006). The silicon dioxide content of silica fume varies with the type of alloy that is ...

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  • Silica Fume – An Admixture for High Quality Concrete

    Silica fume is one such pozzolanic material. Silica fume is a by product obtained from the reduction of high – purity quartz with coal or coke and wood chips in an electric arc furnace during the production of silicon metal or silicon alloys. The use of Silica fume as admixture in concrete has opened up one more chapter on the advancement

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  • What is Silica Fume?

     · Silica fume is a byproduct of producing silicon metal or ferrosilicon alloys. One of the most beneficial uses for silica fume is in concrete. Because of its chemical and physical properties, it is a very reactive pozzolan. Concrete containing silica fume can have very high strength and can be very durable. Silica fume is available from suppliers of concrete admixtures and, when specified, is ...

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  • Calorimetry of Portland cement with silica fume, diatomite ...

     · A water/cementitious material ratio of 0.5 was used to prepare the plain Portland cement and quartz blended cement pastes with a mean consistency; in contrast, a ratio of 0.75 was needed for the same purpose with silica fume and diatomite blended cements. The findings are shown in Fig. 5, Fig. 6.

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  • DSF/PREN ISO 3262-20 : Extenders – Specifications and ...

    DSF/PREN ISO 3262-20, 2020 Edition, 2020 - Extenders – Specifications and methods of test – Part 20: Fumed silica (ISO/DIS 3262-20:2020) This document specifies requirements and corresponding methods of test for fumed silica.

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  • Elkem announced to sponsor concrete research work

    He has mainly been involved with marine concrete structures, silica fume and high performance concrete. He is a former ACI Board member, the current Chair of ACI 234, Silica Fume in Concrete, member of several other ACI committees and also ASTM and European standards committees.

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  • Betong – Användning av EN 206-1 i Sverige Concrete ...

    prEN 13263-1 Silica fume for concrete – Part 1: Definitions, requirements and conformity criteria2 SS 13 21 25 Betongprovning – Ballast – Korndensitet (hydrostatisk metod) och vattenabsorption SS 13 42 02 Cement – Sammansättning och fordringar för cement med begränsad värmeutveckling (BV-cement)

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  • 12-04-01-00

    1:2005 " Silica fume for concrete - Part 1: Definitions, requirements and conformity criteria -- Πυριτική παιπάλη για σκυρόδεµα. Μέρος 1: Ορισµοί απαιτήσεις και κριτήρια συµµόρφωσης'''' και ... αντοχής", prEN 14845-2 '''' Test methods for fibres in concrete ...

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  • EN 13263-1 : 2005 + A1 2009 SILICA FUME FOR CONCRETE ...

    National Standards Authority of Ireland provides Standards from hundreds of publishers. Find your standards for NSAI now & achieve strong business performance.

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  • (EN Concrete standards)

    Silica fume for concrete - Part 1: Definitions, requirements and conformity criteria prEN 13263-2-2002 、 Silica fume for concrete - Part 2: Conformity evaluation prEN 13295-1998

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  • How Does Silica Fume Work in Concrete?

    When silica fume is added to concrete, initially it remains inert. Once portland cement and water in the mix start reacting with each other (hydrating), primary chemical reactions produce two chemical compounds: Calcium Silicate Hydrate (CSH), which is the strength producing crystallization, and Calcium Hydroxide (CH), a by-product also called free lime which is responsible for nothing much ...

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  • Experimental Study Effect of Silica Fume and Hybrid Fiber ...

     · This article aims to study the effect of silica fume on mechanical features of fiber lightweight concrete (steel fibers and polypropylene) including scoria lightweight aggregates. Silica fume is replaced with 10 and 15% by weight of cement. The amounts of steel and polypropylene fibers in this study were (0.4–0.8%) and (0.2%) concrete volume, respectively, and the ratio of length to diameter ...

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  • DIN EN 13263-1

    Draft Document - Silica fume for concrete - Part 1: Definition, specifications and conformity criteria; German version prEN 13263-1:2005/prA1:2008 Historical Version DIN EN 13263-1

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  • US20130035417A1

    A process to inert non-swelling clays in at least one mineral component intended for the preparation of a hydraulic composition, including the addition, to the hydraulic composition, to the mineral component or to one of the other constituents of the hydraulic composition, of an organic molecule having a cationic charge density strictly less than 0.5 meq/g and including at least two atoms each ...

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  • Self-Compacting Concrete

    • silica fume conforming to prEN 13263 • ground granulated blastfurnace slag conforming to BS 6699 Due to the special rheological requirements of SCC, both inert and reactive additions are commonly used to improve and maintain the workability, as well as to regulate the …

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  • Sika Concrete Handbook by Sika AG

     · 11. Standards 11.1.5 The k-value (Extract from EN 206-1) If type II additions are used (fly ash and silica fume, see Chapter 3.4, Page 36), by the …

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  • EN 45020 : 2006 STANDARDIZATION AND RELATED ACTIVITIES ...

     · silica fume for concrete - part 1: definitions, requirements and conformity criteria I.S. EN 10256:2000 NON-DESTRUCTIVE TESTING OF STEEL TUBES - QUALIFICATION AND COMPETENCE OF LEVEL 1 AND LEVEL 2 NON-DESTRUCTIVE TESTING PERSONNEL

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  • BS EN 450-2:2005

    BS EN 13263-2:2005+A1:2009 Silica fume for concrete. Conformity evaluation ... prEN 450-2 specifies the scheme for the evaluation of conformity of fly ash according to prEN 450-1, including certification of conformity by a certification body. The standard provides technical rules for the production control by the manufacturer, including ...

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  • Cormix SF1 CAN/CSA A23.5-98 ASTM C1240-03 prEN 13263

    CAN/CSA A23.5-98 ASTM C1240-03 prEN 13263 DESCRIPTION Cormix SF1 silica fume is an ultrafine spherical, high performance super reactive pozzolanic mineral additive conforming to ASTM C1240 definitions. Composed mostly of silica it is processed from a biproduct and is environmentally friendly.

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  • US20130035423A1

    US20130035423A1 US13/642,263 US201113642263A US2013035423A1 US 20130035423 A1 US20130035423 A1 US 20130035423A1 US 201113642263 A US201113642263 A US 201113642263A US 2013035423 A1 US2013035423 A1 US 2013035423A1 Authority US United States Prior art keywords superplasticizer hydraulic binder mass concrete setting Prior art date 2010-04-20 Legal status (The …

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  • Concrete performance using BFS cement

     · Silica fume was used in form of a slurry with a water content of 50%. The coarse and fine aggregates consisted of natural gravel and sand from the Rhine area and crushed air-cooled blastfurnace slag (bfs) with a particle size distribution of 2/8mm and 8/16mm.

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  • Granulated Blast-Furnace Slag and Coal Fly Ash Ternary ...

    systems containing di erent amounts of silica fume and coal fly ash [19–22] or blast-furnace slag [23]. In particular, ternary cements made with blast-furnace slag and coal fly ash have also been studied. Kashani et al. [24] modeled the yield stress of ternary cement–slag–fly ash pastes based on particle size

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  • The Effect of Mixing Water Temperature on Concrete ...

    + 50 kg Silica Fume For every mix design, three different mixing water temperatures were used (5˚C, 25˚C and 45˚C) to yield a total 12 sets of specimens, where each test specimen is as follows; 12 cubes of (15˚cm x 15˚cm x 15˚cm) divided into sets of 3 cubes broken at …

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  • Freeze-Thaw Resistance of Concrete Effect of : Curing ...

    silica fume concrete. Moisture exchange versus freeze-thaw resistance The investigations on effect of curing were used to consider moisture exchange phenomenon specifically. Plastic curing lead to very low moisture loss that was easily regained during the re-saturation procedure prior to freeze-thaw testing. Very low freeze-thaw damage occurred.

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  • Test methods for HC materials

    Alkali-silica reactivity NONE Petrographic description EN 932-3 properties specific to end use Resistance to ... Silica fume Definitions, requirements and conformity criteria ... Test to prEN 1008 In case of doubt. Materials inspection : steel

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